textproduct: Quad Cities

KEY MESSAGES

- Very heavy rain producing MCS continuing to affect the area through morning before moving off to the east. Then cloudy cooler and breezy conditions into Monday.

- The ongoing Flood Watch has been extended through midday Sunday for lingering rain and flooding problems.

- Scattered showers possible Monday into Tuesday, before a mid to late week break from the precip occurs. Cooler than normal high temperatures in the 60s for much of the upcoming week. Lows at night in the 40s and 50s.

SHORT TERM /THROUGH TONIGHT/

Issued at 250 AM CDT Sun Sep 20 2026

Heavy rain and some flooding-producing MCS acrs the area ATTM will continue to linger and produce some wrap around rains well into Sunday morning especially in the east. With expected flooding and lingering flash flooding problems as well as swollen creeks/rivers coming up, have extended the Flood Watch through 18z. This with the idea that the next shift can cancel portions of the Watch from the west and the north as need be. The rest of the day into the evening behind the exiting LLVL wave to be cloudy, breezy and cooler in the 60s to low 70s with some spotty sprinkles or light rain.

The northeast winds and clouds to continue tonight, keeping fog at bay. There is some fog this Sunday morning in the precip lull areas such as the Hwy 20 corridor. As the upper low currently acrs WY rolls toward the northeastern plains through Monday morning, more showers may pop up and push into the western CWA late tonight into Monday morning. Low temps tonight generally in the 50s.

LONG TERM /MONDAY THROUGH SATURDAY/

Issued at 250 AM CDT Sun Sep 20 2026

Monday and Tuesday...As the above mentioned cool core upper low propagates acrs MN and IA, it should continue the mostly cloudy and light showery regime for the local area into portions of Tue. Highs in the 60s with lows in the 50s. If some clearing occurs Tue night, currently fcst thicknesses support lows in the 40s. If sfc winds trend light the same night, will have to keep fog in mind.

Wednesday through Saturday...Quick look at the longer range suggests kind of a messy and partially blocked upper air pattern, with enough ridging close by or overhead to keep the area mainly dry Wed into Thu, before an undercutting wave battles the ridging to bring the next main chance of rain/showers by Friday into Friday night. Temps look seasonable for the end of the week.

AVIATION /06Z TAFS THROUGH 06Z MONDAY/

Issued at 1245 AM CDT Sun Sep 20 2026

MCS producing widespread showers and thunderstorms with associated low MVFR to IFR conditions will hamper aviation greatly into Sunday morning except for maybe the DBQ site which most of the activity will look to pass south of. Passing sfc low and trof will make for variable and rather light sfc wind regime overnight into early Sunday morning, before the sfc wave passes and allows for the winds to go northeasterly and increase to 10-15 KTS with gusts as the day progresses. IFR to low MVFR cloud decks will persist much of Sunday morning, before trending up to higher criteria MVFR Sunday afternoon into evening. Some chance for VFR CIGs north of I-80 Sunday evening. After the more widespread precip moves out Sunday morning, there will be a chance for sctrd to isolated lighter showers developing in a hit and miss fashion through Sunday evening.

DVN WATCHES/WARNINGS/ADVISORIES

IA...Flood Watch until 1 PM CDT this afternoon for IAZ040>042- 051>054-063>068-076>078. IL...Flood Watch until 1 PM CDT this afternoon for ILZ001-002-007- 009-015>018-024. MO...None.